Water quality of Lake Waramaug and surrounding watershed, Litchfield County, Connecticut
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Water-Resources Investigations Report↗
Geology topics
David Grason
Publications and source records attributed to David Grason.
A presentation and evaluation of the hydrologic information available for the major federal coal lands in seven Eastern States; sources of available information and a plan for future work
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Open-File Report↗
Water-quality monitoring of three major tributaries to the Chesapeake Bay: Interim data report
The U.S. Geological Survey is monitoring the water quality of three major tributaries to Chesapeake Bay at their fall lines to obtain estimates of constituent inputs potentially available to the bay. The monitoring sites are: Susquehanna River at Conowingo, Md.; Potomac River at Washington, D.C.; and James River at Cartersville, Va. Water-quality data collected from October 1978 to April 1980 are presented in tables. Concentrations of major ions, nutrient and carbon species, metals, pesticides, suspended sediment, and other selected constituents are presented for a range of flows. The mean, standard deviation, minimum, maximum, and median values for each constituent were determined by standard methods and are presented for each sampling station. Bivariate linear regressions were run for all constituents versus streamf low, specific conductance, and suspended sediment. Those relationships exhibiting coefficients of determination (R ) greater than 0.50 are tabulated.
James River, Potomac River, Susquehanna River↗
Chemical analyses of surface water in Illinois, 1975-77--Volume I, Des Plaines River basin and Lake Michigan
Samples of surface water were collected and analyzed by the Illinois Environmental Protection Agency. The results from water years 1975 to 1977 are presented in three volumes. The history of sampling and analytical methods used during that period are summarized. Stream discharge data from records of the U.S. Geological Survey are included for all sites where samples were collected at gaging stations or near enough that reliable discharge estimates could be made. Volume I includes the Des Plaines River basin and Lake Michigan.
Illinois↗
Chemical analyses of surface water in Illinois, 1975-77--Volume II, Illinois River basin and Mississippi River tributaries north of Illinois River basin
Samples of surface water were collected and analyzed by the Illinois Environmental Protection Agency. The results from water years 1975 to 1977 are presented in three volumes. The history of sampling and analytical methods used during that period are summarized. Stream discharge data from records of the U.S. Geological Survey are included for all sites where samples were collected at gaging stations or near enough that reliable discharge estimates could be made. Volume II includes the Illinois River basin and Mississippi River tributaries north of Illinois River basin.
Illinois↗
Chemical analyses of surface water in Illinois, 1975-77--Volume III, Ohio River tributaries and Mississippi River tributaries south of Illinois River basin
Samples of surface water were collected and analyzed by the Illinois Environmental Protection Agency. The results from water years 1975 to 1977 are presented in three volumes. The history of sampling and analytical methods used during that period are summarized. Stream discharge data from records of the U.S. Geological Survey are included for all sites where samples were collected at gaging stations or near enough that reliable discharge estimates could be made. Volume III includes Ohio River tributaries and Mississippi River tributaries south of Illinois River basin.
Illinois↗